Rayner Intraocular Lenses Limited

Rayner Intraocular Limited

Qmp Holding Gmbh

Acmit Gmbh

Nicole Plank

Martin Kornfeld

Wolfgang Brezna

Kirsten Lux

Nikolaus Dragostinoff

Olivier La Schiazza

The invention relates to a multifocal lens () with a refractive focus (F) and with a diffractive structure () which, in the radial direction (r) of the lens (), plotted across the squared radius (r), has a periodic profile (), wherein the profile () per period has four adjoining portions () which are not differentiable at their connection sites (), wherein a first portion () has a monotonically falling function and the three further portions () have a monotonically rising function or vice versa, and wherein the further portion (), which does not adjoin the first portion (), has a greater pitch than the other further portions ().

Multifocal lens

The invention relates to a multifocal lens (), in particular an intraocular lens or contact lens, having a refractive focus (F) and a first and a second diffractive structure () that at least partially overlap, said two diffractive structures () being different. A first order focus (F) of the first diffractive structure () coincides with a first order focus (F) of the second diffractive structure (). The invention further relates to a method for producing such a multifocal lens ().

Multifocal lens and method for producing same

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Forchtenstein, Austria

Nicole Plank